For high-speed processing of large mail volumes. Automatically feeds, opens, and collects a stack of envelopes. Operates at a speed of up to 17,500 envelopes/hour. Opens envelopes up to 1⁄4" thick. Accepts a 6" tall stack of envelopes. Fully adjustable width to accommodate different envelope sizes and types. Comes with removable receiving tray. Ideal for large businesses and mailrooms.